/// <summary>
/// Main method.
/// </summary>
/// <param name="args">The arguments.</param>
public static void Main(string[] args)
{
Test("benort", string.Concat(Enumerable.Repeat("tobeornottobeor", 100000)) + "tobe");
Test("0123456789", RandomNumericString(100000));
do
{
Console.WriteLine("Alphabet:");
var alphabet = Console.ReadLine();
try
{
var zipper = new LZWCompress(alphabet);
var unzipper = new LZWDecompress(alphabet);
do
{
Console.WriteLine("Message:");
var message = Console.ReadLine();
try
{
var encrypted = zipper.Encrypt(message);
Console.WriteLine(encrypted);
if (unzipper.Decrypt(encrypted) != message)
{
Console.WriteLine("Oops, decrypted message did not match.");
}
}
catch (Exception)
{
Console.WriteLine("Sorry, this message is wrong!");
}
Console.WriteLine("Another message?");
}while (Console.ReadLine().ToLower() != "n");
Console.WriteLine("Another alphabet?");
}
catch (Exception)
{
Console.WriteLine("Sorry, this is not a valid alphabet, make sure all characters are distinct!");
}
}while (Console.ReadLine().ToLower() != "n");
}
/// <summary>
/// Tests the specified alphabet and message.
/// </summary>
/// <param name="alphabet">The alphabet.</param>
/// <param name="message">The message.</param>
private static void Test(string alphabet, string message)
{
var zipper = new LZWCompress(alphabet);
var zipperPT = new LZWCompressPT(alphabet);
var unzipper = new LZWDecompress(alphabet);
var sw = new System.Diagnostics.Stopwatch();
sw.Start();
var encrypted = zipper.Encrypt(message);
Console.WriteLine("Encrypted (HT) in {0} milliseconds", sw.ElapsedMilliseconds);
sw.Restart();
var encryptedPT = zipperPT.Encrypt(message);
Console.WriteLine("Encrypted (PT) in {0} milliseconds", sw.ElapsedMilliseconds);
if (encrypted != encryptedPT)
{
Console.WriteLine("Encryption results do not match!!!");
Console.WriteLine(encrypted);
Console.WriteLine(encryptedPT);
Console.WriteLine();
}
sw.Restart();
var decrypted = unzipper.Decrypt(encrypted);
Console.WriteLine("Decrypted in {0} milliseconds", sw.ElapsedMilliseconds);
if (message != decrypted)
{
Console.WriteLine("Decrypted text does not match with original!!!");
Console.WriteLine(message);
Console.WriteLine(decrypted);
}
Console.WriteLine();
}